Thread (42 messages) 42 messages, 8 authors, 2014-02-24
STALE4475d

Re: [PATCH 6/9] Staging/iio/adc/touchscreen/MXS: add interrupt driven touch detection

From: Jonathan Cameron <hidden>
Date: 2013-10-01 11:06:49
Also in: linux-arm-kernel, linux-iio

On 10/01/13 11:51, Jonathan Cameron wrote:
On 10/01/13 10:28, Jürgen Beisert wrote:
quoted
Hi Jonathan,

On Tuesday 01 October 2013 11:25:46 Jonathan Cameron wrote:
quoted
a couple of the patch descriptions say that they are untested on i.MX28.
On Monday 23 September 2013 16:36:35 Juergen Beisert wrote:
quoted
For battery driven systems it is a very bad idea to collect the touchscreen
data within a kernel busy loop.

This change uses the features of the hardware to delay and accumulate
samples in hardware to avoid a high interrupt and CPU load.

Note: this is only tested on an i.MX23 SoC yet.
This note is no longer true. Marek tested it on his M28EVK, Lothar on his TX28 
and myself also on an i.MX28EVK.

For the IIO part of the driver I tested on my i.MX23 based ChumbyOne and some 
customer hardware and it seems still to work (I can only guess if the values I 
read from the sysfs entries are correct, sorry).
Excellent. I'll assume everyone is happy then and add some appropriate
tested-by tags. I'd missed Marek's reply saying he was fine with this.
This one is not applying cleanly.  I've merged what I think is the right
fixup, but please check.

The issue is around the error handling after mxs_lradc_ts_register which has
been changed in the meantime it seems.

Jonathan

Thanks,

Jonathan
quoted
Regards,
Juergen
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